话说现在众里寻他千百lu,被封了没有?
的有关信息介绍如下:问题补充说明:没被封的话最新网址是多少?... 没被封的话最新网址是多少? 展开
众里寻他千百
www.***.cnx^3-6x^2y+11xy^2-6y^3
= (x^3-6x^2y+9xy^2) + (2xy^2-6y^3)
= x(x^2-6xy+9y^2) + 2y^2(x-3y)
= x(x-3y)^2 + 2y^2(x-3y)
= { x(x-3y) + 2y^2 } * (x-3y)
= (x^2 - 3xy + 2y^2) * (x-3y)
= (x-y)(x-2y)(x-3y)"